WO2021172770A1 - 모터 - Google Patents
모터 Download PDFInfo
- Publication number
- WO2021172770A1 WO2021172770A1 PCT/KR2021/001016 KR2021001016W WO2021172770A1 WO 2021172770 A1 WO2021172770 A1 WO 2021172770A1 KR 2021001016 W KR2021001016 W KR 2021001016W WO 2021172770 A1 WO2021172770 A1 WO 2021172770A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bus bar
- disposed
- terminal
- protrusion
- bar body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
- H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
- H02K2203/09—Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/12—Machines characterised by the modularity of some components
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
Definitions
- the embodiment relates to a motor.
- the motor includes a rotor and a stator.
- a coil is wound around the stator.
- a connection end of the coil wound around the stator may be connected to the bus bar.
- a busbar includes a busbar body and a terminal.
- the terminal may be electrically connected to a connection end of the coil. Also, the terminal may be integrally formed with a power terminal connected to an external power source.
- the terminal may include a terminal body, a plurality of connection terminals extending from the terminal body, and a power terminal.
- the body of the terminal generally includes a curved surface, and the connecting terminal and the power terminal are bent and branched from the body.
- the power terminal since the power terminal is connected to an external power source, it is characterized in that the length is long.
- stator, busbar, busbar terminal, and the power terminal may each have a tolerance in the axial direction during the assembly process. At this time, there is a problem in that the axial positions of the power terminal and the power terminal are changed as the above tolerances are accumulated. Accordingly, there is a problem in that the position of the power terminal deviates from the allowable error and causes a defect in the motor.
- the embodiment is intended to solve the above problems, and in the manufacturing process, it is a task to be solved to provide a motor including a terminal that generates a small amount of scrap.
- the embodiment includes a power terminal coupled to a rotary shaft, a rotor coupled to the rotary shaft, a stator disposed outside the rotor, a bus bar disposed above the stator, and the bus bar connected to the coil, and , the power terminal part includes a first groove, the bus bar includes a bus bar body and a plurality of terminals disposed on the bus bar body, and the bus bar body protrudes upward from an upper surface of the bus bar body. and a plurality of first protrusions disposed in the first groove, wherein the plurality of first protrusions are disposed on the same circular orbit with respect to the center of the bus bar.
- the bus bar body includes a first bus bar body and a second bus bar body arranged in a vertical multi-stage structure, and the first protrusion is one of the first bus bar body and the second bus bar body. It can be placed in either one.
- the first protrusion may be disposed on the first bus bar body, and the first protrusion may be disposed to overlap the second bus bar body in a circumferential direction.
- the first protrusion may be disposed between the second bus bar bodies separated in the circumferential direction.
- the plurality of first protrusions may be arranged to be rotationally symmetrical.
- the terminal includes a terminal body, a third protrusion extending from an end of the terminal body and connected to an end of the coil, and a fourth protrusion branching from the third protrusion and connected to the power terminal,
- the plurality of first protrusions may be disposed between adjacent fourth protrusions in a circumferential direction of the bus bar.
- a rotary shaft, a rotor coupled to the rotary shaft, a stator disposed to correspond to the rotor, a stator including a stator core, a coil, a bus bar disposed on the upper side of the stator, and the coil are connected, a power terminal coupled to the bus bar, the power terminal comprising a second protrusion, the bus bar comprising a bus bar body, and a plurality of terminals disposed on the bus bar body, the bus bar body comprising: and a plurality of second grooves disposed on the upper surface of the bus bar body and in which the second protrusion is disposed, wherein the plurality of second grooves are disposed on the same circular orbit with respect to the center of the bus bar can do.
- the bus bar body includes a first bus bar body and a second bus bar body arranged in a vertical multi-stage structure, and the second groove is the first bus bar body and the second bus bar body.
- a motor placed on either one.
- the second groove may be disposed on the first bus bar body, and the second groove may be disposed to overlap the second bus bar body in a circumferential direction.
- the second groove may be disposed between the second bus bar bodies separated in the circumferential direction.
- the plurality of second grooves may be arranged rotationally symmetrically.
- the terminal includes a terminal body, a third protrusion extending from an end of the terminal body and connected to an end of the coil, and a fourth protrusion branching from the third protrusion and connected to the power terminal,
- the plurality of second grooves may be disposed between adjacent fourth protrusions in a circumferential direction of the bus bar.
- the third protrusion may have a rectangular member in a horizontal cross-section, and a long side direction of the horizontal cross-section may be a radial direction of the bus bar.
- the fourth protrusion may have a horizontal cross-section of a rectangular member, and a longitudinal direction of the horizontal cross-section may be a circumferential direction of the bus bar.
- the plurality of fourth protrusions may be disposed on different circumferences with respect to the center of the bus bar.
- a bus bar and a power terminal body including a shaft, a rotor coupled to the shaft, a stator disposed to correspond to the rotor, a bus bar body and a plurality of terminals disposed on the bus bar body; and a power terminal unit including a plurality of power terminals disposed on the power terminal unit body, wherein the bus bar is disposed above a first bus bar body on which a first terminal is disposed and an upper side of the first bus bar body, and a second terminal a second bus bar body disposed therein, including a plurality of first coupling parts on an upper surface of the first bus bar body, and a plurality of second coupling parts coupled to the first coupling part on a lower surface of the power terminal body It is possible to provide a motor including a coupling unit, to which the second terminal and the plurality of power terminals are connected.
- An embodiment for achieving the above object is a shaft; a rotor coupled to the shaft; a stator disposed outside the rotor; a bus bar disposed above the stator; a housing accommodating the stator and the bus bar, wherein the housing includes a first part disposed above the bus bar, the bus bar having at least one first support surface in contact with the first part and, wherein the first part provides a motor including at least one second support surface in contact with the first support surface, respectively.
- the first support surface and the second support surface may overlap in an axial direction.
- the number of the first support surfaces is plural, the plurality of first support surfaces are spaced apart from each other at equal intervals, the number of the second support surfaces is plural, and each of the plurality of second support surfaces is a first support surface.
- the number of the first support surfaces is plural, the plurality of first support surfaces are spaced apart from each other at equal intervals, the number of the second support surfaces is plural, and each of the plurality of second support surfaces is a first support surface.
- the bus bar may include at least one protrusion protruding toward the first part, and the second support surface may be disposed on an end surface of the protrusion.
- the bus bar includes a first terminal connected to the stator and a second terminal connected to the first terminal and connected to an external power source, and the first part is a hole through which the second terminal passes. can be formed.
- the bus bar includes a body that insulates the first terminal and the second terminal, and at least one protrusion may be disposed on an upper surface of the body.
- the second support surface may be higher than an upper surface of the body and lower than an upper end of the second terminal.
- the protrusion may include a first member extending from the body and a second member disposed inside the first member.
- the end surface of the second member may be disposed higher than the end surface of the first member, and the end surface of the second member may be disposed on the second support surface.
- the first member may be made of the same material as the bus bar body, and the second member may be made of a different material from the first member.
- the three protrusions may be spaced apart from each other at intervals of 120 degrees with respect to the axis of rotation of the shaft.
- the three protrusions may have the same distance from the center of the shaft.
- the second terminal may be disposed between any one of the three protrusions and the other in the circumferential direction.
- the housing includes a second part disposed outside the stator and the bus bar, and a third part disposed below the stator, wherein the first part and the second part are integral;
- the third part may be coupled to the second part.
- the first part may include a first surface facing the bus bar and a second surface opposite to the first surface, the first surface on which the at least one first support surface may be disposed. have.
- the first support surface may be a flat surface, and an area of the first support surface may be larger than an area of an end surface of the second support surface.
- the body and the first supporting surface are spaced apart in an axial direction, and the separation distance between the body and the first supporting surface may be the same as the axial length of the protrusion.
- the embodiment provides an advantageous effect of significantly reducing the manufacturing cost, including the terminal that generates less scrap in the manufacturing process.
- the bus bar while the bus bar is in contact with the inner surface of the housing while the bus bar is inserted into the housing, the bus bar may be placed in the correct position. And, by guiding the power connection part of the terminal to the correct position, it is possible to prevent a change in the position of the terminal power connection part due to the accumulated tolerance. Accordingly, it is possible to reduce the failure of the motor due to the power terminal connection failure.
- FIG. 1 is a view showing a motor according to an embodiment
- FIG. 2 is a view showing a power terminal unit and a bus bar
- FIG. 3 is a view showing a state in which the power terminal unit and the bus bar are disassembled
- FIG. 5 is a view showing a plate material forming an upper terminal of a bus bar
- FIG. 6 is a perspective view showing an upper terminal
- FIG. 7 is a perspective view showing a first terminal
- FIG. 8 is a perspective view showing a second terminal
- FIG. 9 is a perspective view showing a third terminal
- FIG. 11 is a plan view of the upper terminal shown in FIG. 8, showing the radial length of the second projection up to the third projection in the radial direction;
- FIG. 12 is a view showing a modified example of the upper terminal
- 13 is a plan view of the bus bar body
- FIG. 14 is a perspective view showing a power terminal unit and a bus bar according to a modified example
- FIG. 15 is a bottom view of the power terminal shown in FIG. 14;
- FIG. 16 is a plan view of the bus bar body shown in FIG. 14;
- 17 is a perspective view of a bus bar according to a modified example, in which a fourth protrusion is arranged in a circumferential direction;
- FIG. 18 is a view showing a plate material forming an upper terminal of a bus bar
- 19 is a perspective view showing an upper terminal
- 20 is a perspective view showing a first terminal
- 21 is a perspective view showing a second terminal
- 22 is a perspective view showing a second third terminal
- FIG. 23 is a plan view of the upper terminal of the bus bar shown in FIG. 17;
- FIG. 24 is a plan view of the bus bar body shown in FIG. 17;
- FIG. 25 is a view showing a bus bar including a first groove in place of the 'th projection on the bus bar body shown in FIG. 17;
- 26 is a plan view of the bus bar body shown in FIG. 22;
- 27 is a side cross-sectional view of the motor according to the embodiment.
- 29 is a perspective view showing a bus bar
- 30 is a plan view of a bus bar
- FIG. 31 is a cross-sectional view taken along line AA' of FIG. 30;
- 32 is a perspective view of a first part and a second part
- 34 is an exploded perspective view showing a state in which the bus bar and the housing are coupled;
- 35 is a side cross-sectional view showing a state in which the bus bar and the housing are coupled;
- the direction parallel to the longitudinal direction (up and down direction) of the shaft is called the axial direction
- the direction perpendicular to the axial direction with respect to the shaft is called the radial direction
- the direction along a circle having a radial radius around the shaft is the circumference called the direction.
- FIG. 1 is a diagram illustrating a motor according to an embodiment.
- the motor according to the embodiment includes a shaft 10 , a rotor 20 , a stator 30 , an insulator 40 , a housing 50 , a bus bar 60 , a sensing unit 70 , and a substrate. (80) may be included.
- the term “inside” indicates a direction from the housing 50 toward the rotation shaft 10 which is the center of the motor, and “outside” indicates a direction opposite to the inside, which is a direction from the rotation shaft 10 toward the housing 50.
- the circumferential direction or the radial direction is based on the axial center, respectively.
- the shaft 10 may be coupled to the rotor 20 .
- the shaft 10 When electromagnetic interaction occurs between the rotor 20 and the stator 30 through the supply of current, the rotor 20 rotates and the shaft 10 rotates in conjunction therewith.
- the shaft 10 is rotatably supported by a bearing 1 .
- the shaft 10 may be connected to a steering device of a vehicle to transmit power.
- the rotor 20 rotates through electrical interaction with the stator 30 .
- the rotor 20 may be disposed to correspond to the stator 30 , and may be disposed inside.
- the rotor 20 may include a rotor core 21 and a magnet 22 disposed on the rotor core 21 .
- the rotor 20 may be of the SPM type in which the magnet 22 is disposed on the outer peripheral surface of the rotor core 21 .
- the stator 30 is disposed outside the rotor 20 .
- the stator 30 may include a stator core 30A, a coil 30B, and an insulator 40 mounted on the stator core 30A.
- the coil 30B may be wound around the insulator 40 .
- the insulator 40 is disposed between the coil 30B and the stator core 30A, and serves to electrically insulate the stator core 30A and the coil 30B from each other.
- the coil 30B causes an electrical interaction with the magnet of the rotor 20 .
- the bus bar 60 is disposed above the stator 30 .
- the bus bar 60 includes a bus bar body 100 made of an insulating material and a plurality of terminals coupled to the bus bar body.
- the bus bar body is formed of an insulating material to prevent a plurality of terminals from being connected to each other and being connected.
- the plurality of terminals connect the coils 30B wound around the stator core 30A to each other to apply a current to each coil.
- the sensing unit 70 may be coupled to the shaft 10 .
- the sensing unit 70 includes a sensing plate 70A and a sensing magnet 70B disposed on the sensing plate.
- a sensor for sensing the magnetic force of the sensing magnet 70B may be disposed on the substrate 80 .
- the sensor may be a Hall IC, and serves to detect the magnetic flux of the sensing magnet 70B of the sensing unit 70 coupled to the shaft 10 .
- the sensing unit 70 and the substrate 80 perform a function to detect the position of the rotor 20 by sensing the magnetic flux changing according to the rotation.
- FIG. 2 is a view showing a power terminal unit and a bus bar
- FIG. 3 is a view showing a state in which the power terminal unit and the bus bar are disassembled.
- the bus bar 60A may include a bus bar body 100 and a terminal 200 .
- the bus bar body 100 may be an annular mold member.
- the bus bar body 100 may include a first bus bar body 110 and a second bus bar body 120 .
- the second bus bar body 120 is disposed on the upper side of the first bus bar body 110 , so that the bus bar body 100 may be disposed in a multi-stage structure in the vertical direction.
- the terminal 200 may include a second terminal 200_1 connected to power on U, V, and W and a neutral terminal 200_2 connecting the second terminals 200_1.
- the second terminal 200_1 may not include a power terminal connected to an external power source, and the second terminal 200_1 may be connected to a separate power terminal connected to an external power source.
- the neutral terminal 200_2 may be disposed on the first bus bar body 110 of the bus bar body 100 .
- the second terminal 200_1 may be disposed on the second bus bar body 120 of the bus bar body 100 .
- the power terminal unit 90A may be disposed on the bus bar 60A.
- the power terminal unit 90A may include a body 91 and a power terminal 92 .
- the body 91 is coupled to the bus bar body 100 .
- one end of the power terminal 92 is connected to the second terminal 200_1 of the bus bar 90A and the other end is connected to an external power source. do.
- FIG. 4 is a bottom view of the power terminal unit 90A.
- the body 91 of the power terminal part 90A is a second coupling part and may include a plurality of first grooves 91a.
- the first groove 91a is concavely formed in the lower surface of the body 91 .
- the first groove 91a is for coupling the power terminal 90 and the bus bar 60A, and is where the first protrusion 101, which is the first coupling part of the bus bar 60A, is press-fitted.
- the end of the power terminal 92 is aligned with the fourth protrusion 230 of the second terminal 200_1 of the bus bar 90A and is in contact do.
- the terminal 200 may include a first terminal 200_2 and a second terminal 200_1 .
- the first terminal may be a neutral terminal
- the second terminal 200_1 may be an upper terminal.
- FIG 5 is a view illustrating a plate material forming the second terminal 200_1 of the bus bar 60A.
- the second terminal 200_1 may be manufactured by press-working the plate material 2 .
- the plate material 2 may be a band-shaped member having a constant width.
- the plate 2 forms a first region 3 forming the terminal body 210 of the second terminal 200_1 and a second protrusion (220 in FIGS. 5, 6, 7) of the second terminal 200_1.
- the second region 4 and the third region 5, the fourth region 6 and the fifth region 7 forming the third protrusion (230 in FIGS. 5, 6 and 7) of the second terminal 200_1 ) may be included.
- the first region 3 is disposed elongated along one edge of the plate 2 .
- the second region 4 may be bent upward from one end of the first region 3 , and again bent outwardly of the first region 3 .
- the third region 5 may be bent upward at the other end of the first region 3 , and then again bent inwardly of the first region 3 .
- the second region 4 and the third region 5 may be bent and extended in the same direction from the first region 3 in the same direction.
- the fourth region 6 may be branched upward from the second region 4 .
- the fourth region 6 is formed up to the other edge of the plate 2 .
- the fifth region 7 may be branched upward from the third region 5 .
- a fifth region 7 is also formed up to the other edge of the plate 2 .
- the shape of the second terminal 200_1 is the above-described first region 3 , second region 4 , third region 5 , fourth region 6 , and fifth region 7 of the plate material 2 . ) can be formed.
- FIG. 6 is a perspective view showing a second terminal 200_1
- FIG. 7 is a perspective view showing a 2-1 terminal 200A
- FIG. 8 is a perspective view showing a 2-2 terminal 200B
- FIG. 9 is a perspective view illustrating the second-3 terminal 200C.
- the second terminal 200_1 is a 2-1 terminal 200A, a 2-2 terminal 200B, and a 2-3 terminal connected to power on U, V, and W, respectively. (200C) may be included.
- a group of terminals including the 2-1-th terminal 200A, the 2-2 terminal 200B, the 2-3-th terminal 200C, and the neutral terminal 200_2 may be arranged as a pair.
- Terminal 2-1 (200A), terminal 2-2 (200B), and terminal 2-3 (200C) are terminal body 210, third protrusion 220, and fourth protrusion 230, respectively. may include.
- Terminal body 210 of terminal 2-1 (200A), terminal body 210 of terminal 2-2 (200B), terminal body 210 of terminal 2-3 (200C) are bus bars (60A) may be arranged differently in the radial direction of From the viewpoint of the terminal body 210 , from the inside to the outside, the 2-1 th terminal 200A, the 2-2 th terminal 200B, and the 2-3 th terminal 200C may be disposed in the order.
- the 2-1 th terminal 200A, the 2-2 terminal 200B, and the 2-3 th terminal 200C may be arranged to include a radially overlapping area.
- Terminal 2-1 (200A), terminal 2-2 (200B), and terminal 2-3 (200C) are erected so that the vertical width is larger than the horizontal width corresponding to the thickness of the plate material (2), respectively. can be placed.
- the third protrusion 220 is in contact with the end of the coil 30B.
- the third protrusion 220 extends upward from the end of the terminal body 210 and is bent outwardly in the radial direction.
- the end of the third protrusion 220 is bent in the form of a hook to surround the first end (not shown) of the coil 30B.
- the third protrusion 220 may include a 3-1 protrusion 221 and a 3-2 protrusion 222 .
- the 3-1 protrusion 221 may be disposed at one end of the terminal body 210 . have.
- the 3-2 protrusion 222 may be disposed on the other end of the terminal body 210 .
- the 3-1 protrusion 221 may be connected to one end of the coil 30B.
- the 3-2 protrusion 222 may be connected to the other end (not shown) of the coil 30B different from the coil 30B connected to the 3-1 protrusion 221 . Although not shown, the other end of each coil 30B may be connected to the neutral terminal 200_2.
- the fourth protrusion 230 is a place in contact with a separate power terminal.
- the fourth protrusion 230 is arranged to branch upward from the third protrusion 220 .
- the fourth protrusion 230 may be a longitudinal member including a plane.
- the fourth protrusion 230 may include a 4-1 protrusion 231 and a 4-2 protrusion 232 .
- the 4-1 th projection 231 may branch from the 3-1 th projection 221 .
- the 4-2th protrusion 232 may branch from the 3-2th protrusion 222 .
- the 2-1 terminal 200A, the 2-2 terminal 200B, and the 2-3 terminal 200C include the terminal body 210, the third protrusion 220 and the fourth protrusion 230,
- the overall shape is the same, but the length of the terminal body 210 in the circumferential direction or the length of the third protrusion 220 may be different.
- the size and shape of the fourth protrusion 230 may be the same in the 2-1 th terminal 200A, the 2-2 terminal 200B, and the 2-3 th terminal 200C. This is for common use of the second terminal 200_1 in correspondence with power terminals of various positions.
- 10 is a plan view of the second terminal 200_1.
- the plurality of fourth protrusions 230 disposed on all the second terminals 200_1 are disposed at the same position in the radial and vertical directions of the bus bar 60A.
- the plurality of fourth protrusions 230 may be disposed at equal intervals along the circumferential direction of the bus bar 60A.
- the fourth protrusion 230 is a longitudinal member having a horizontal cross-section having a length H1 greater than a width W1.
- the long side direction of the horizontal section may be the radial direction of the bus bar 60A.
- the plurality of fourth protrusions 230 may be arranged such that the radially convex center of the horizontal end is disposed on the same orbit with respect to the center C of the bus bar 60A. Accordingly, the plurality of fourth protrusions 230 may be radially disposed with respect to the center C of the bus bar 60A.
- the plurality of fourth protrusions 230 may be disposed at the same intervals based on the circumferential direction of the bus bar 60A.
- the second terminal 200_1 is electrically separated from the second terminal 200_1 of the first group 200_1A (hereinafter, referred to as the first group 200_1A) and the second terminal of the second group 200_1B. It may be divided into two terminals 200_1 (hereinafter, referred to as a second group 200_1B).
- the first group 200_1A and the second group 200_1B may be arranged to be separated based on an imaginary straight line passing through the center C of the bus bar 60A.
- first group 200_1A and the second group 200_1B may be disposed to be rotationally symmetric with respect to the center C of the bus bar 60A.
- first group 200_1A and the second group 200_1B may be symmetrically disposed based on an imaginary straight line passing through the center C of the bus bar 60A.
- the first angle R1 of the first group 200_1A and the second angle R2 of the second group 200_1B may be the same.
- the first angle R1 is an angle indicating a circumferential distance between the second terminal 200_1 of the first group 200_1A and the fourth protrusion 230
- the second angle R2 is the second group ( An angle indicating a circumferential distance between the second terminal 200_1 of the 200_1B and the fourth protrusion 230 .
- the reference for the first angle R1 and the second angle R2 corresponds to the circumferential width center of the horizontal cross-section of the fourth protrusion 230 , respectively.
- the third angle R3 between the first group 200_1A and the second group 200_1B may also be the same as the first angle R1 or the second angle R2 .
- the third angle R3 is an angle indicating a circumferential distance between the second protrusions 230A of the first group 200_1A and the second protrusions 230B of the second group 200_1B adjacent to each other.
- the reference for the third angle R3 corresponds to the circumferential width center of the horizontal cross-section of the fourth protrusion 230 , respectively.
- FIG. 11 is a plan view of the second terminal 200_1 shown in FIG. 10 , and is a view showing the radial length of the third protrusion 220 extending to the fourth protrusion 230 in the radial direction.
- the radial length of the third protrusion 220 extending to the fourth protrusion 230 in the radial direction is shortened and referred to as a length.
- the lengths L1 and L2 of the second-first terminal 200A located relatively inside may be longer than the lengths L3 and L4 of the second-second terminal 200B.
- the lengths L5 and L6 of the second-third terminal 200C located relatively outside may be shorter than the lengths L3 and L4 of the second-second terminal 200B.
- the lengths L1, L3, and L5 of the 3-1 protrusions 221 and the The lengths L2, L4, and L6 of the 3-2 protrusion 222 may be the same.
- FIG. 12 is a diagram illustrating a modified example of the second terminal 200_1.
- the second protrusion 230A of the first group 200_1A adjacent to each other and the second protrusion 230B of the second group 200_1B are radially different from each other.
- Each is placed on the terminal placed in the position.
- the second protrusion 230A of the first group 200_1A is disposed on the 2-1-th terminal 200A
- the second protrusion 230B of the second group 200_1B is disposed on the 2-1-th terminal ( 200A) and a radial position different from that of the second-third terminal 200C.
- the second protrusions 230A of the first group 200_1A and the second protrusions 230B of the second group 200_1B adjacent to each other are located at the same position in the radial direction.
- Each can be arranged.
- the second protrusion 230A of the first group 200_1A is disposed on the second-first terminal 200A, and the second protrusion 230B of the second group 200_1B also has the same radial position. It may be disposed in the 2-1 th terminal 200A.
- 13 is a plan view of the bus bar body 100 .
- the bus bar body 100 may include a plurality of first protrusions 101 .
- the plurality of first protrusions 101 protrude upward from the top surface of the first bus bar body 110 of the bus bar body 100 .
- the first protrusion 101 may be coupled to a body surrounding the power terminal.
- the first protrusion 101 is for aligning the positions of the power terminal coupled to the bus bar 60A and the fourth protrusion 230 .
- the first protrusion 101 may have a cylindrical shape, and an upper end of the first protrusion 101 may have a conical shape.
- the plurality of first protrusions 101 may be arranged such that their centers are arranged on the same track with respect to the center C of the bus bar 60A. This is for common use of the second terminal 200_1 in correspondence with the positions of various power terminals.
- the first protrusion 101 may be disposed inside the fourth protrusion 230 .
- the first protrusion 101 in the circumferential direction of the bus bar 60A may be disposed so as not to overlap the fourth protrusion 230 . That is, in the circumferential direction of the bus bar 60A, the first protrusion 101 may be disposed between the fourth protrusion 230 and the adjacent fourth protrusion 230 .
- the first protrusion 101 may be disposed to overlap the second bus bar body 120 in the circumferential direction.
- the second bus bar body 120 of the bus bar body 100 may form empty spaces S1 and S2 with a predetermined width in a circumferential direction.
- the first protrusion 101 may be disposed in these empty spaces S1 and S2 .
- the empty spaces S1 and S2 are spaces in which the second bus bar body 120 is separated and spaced apart as shown in S1 of FIG. 10, or are concave in the radial direction as shown in S2 of FIG. It may be a second groove.
- the first protrusion 101 may be disposed in the empty spaces S1 and S2.
- the side surfaces of the second bus bar body 120 forming the boundary between the empty spaces S1 and S2 serve to guide the power terminal in the process of coupling the power terminal to the bus bar 60A.
- the present invention is not limited thereto, and may be implemented while disposed on the second bus bar body 110 .
- FIG. 14 is a perspective view illustrating a power terminal unit 90B and a bus bar 60A according to a modified example
- FIG. 15 is a bottom view of the power terminal unit 90B shown in FIG. 14 .
- the body 91 of the power terminal unit 90B may include a plurality of second protrusions 91b.
- the second protrusion 91b is formed to protrude from the lower surface of the body 91 .
- the second protrusion 91b is for coupling the power terminal 90B and the bus bar 60A, and is press-fitted into the second groove 102 of the bus bar 60A.
- FIG. 16 is a plan view of the bus bar body 100 shown in FIG. 14 .
- a bus bar 60A may include a second groove 102 instead of the first protrusion 101 .
- the bus bar body 100 may include a plurality of second grooves 102 .
- the plurality of second grooves 102 may be concavely formed in the upper surface of the bus bar body 100 .
- the second groove 102 may be combined with a protruding structure of the body surrounding the power terminal.
- the second groove 102 is also for aligning the positions of the power terminal coupled to the bus bar 60A and the fourth protrusion 230 .
- the plurality of second grooves 102 may be arranged such that their centers are disposed on the same circular orbit O3 with respect to the center C of the bus bar 60A.
- the second groove 102 in the circumferential direction of the bus bar 60A may be disposed so as not to overlap the fourth protrusion 230 . That is, in the circumferential direction of the bus bar 60A, the second groove 102 may be disposed between the fourth protrusion 230 and the adjacent fourth protrusion 230 .
- the second groove 102 may be disposed inside the fourth protrusion 230 .
- the second groove 102 in the radial direction of the bus bar 60A may be disposed so as not to overlap the fourth protrusion 230 . That is, in the circumferential direction of the bus bar 60A, the second groove 102 may be disposed between the fourth protrusion 230 and the adjacent fourth protrusion 230 .
- the second groove 102 may be disposed to overlap the second bus bar body 120 in the circumferential direction.
- the second bus bar body 120 of the bus bar body 100 may form empty spaces S3 and S4 with a predetermined width in a circumferential direction.
- the second groove 102 may be disposed in the empty spaces S3 and S4.
- the empty spaces S3 and S4 are spaces in which the second bus bar body 120 is separated and spaced apart as shown in S3 of FIG. 13 or are concave in the radial direction as shown in S4 of FIG. 13 of the second bus bar body 120 . It may be a second groove.
- the second groove 102 may be disposed in these empty spaces S3 and S4.
- the side surfaces of the second bus bar body 120 forming the boundary between the empty spaces S3 and S4 serve to guide the power terminal in the process of coupling the power terminal to the bus bar 60A.
- the present invention is not limited thereto, and may be implemented while disposed on the second bus bar body 110 .
- the bus bar 60B may include a bus bar body 1100 and a terminal 1200 .
- the terminal 1200 may include an upper terminal 1200_1 connected to power on U, V, and W and a neutral terminal 1200_2 connecting the upper terminals 1200_1.
- the bus bar body 1100 may include a plurality of first protrusions 1101 .
- the plurality of first protrusions 1101 protrude upward from the top surface of the first bus bar body 1110 of the bus bar body 1100 .
- the first protrusion 1101 is for aligning the position of the power terminal 90A coupled to the bus bar 60B.
- 18 is a view showing the plate 12 forming the upper terminal 1200_1 of the bus bar 60B.
- the plate 12 includes a first region 13 forming the upper terminal 1210 of the upper terminal 1200_1 and a second region 13 forming the third protrusion 1220 of the upper terminal 1200_1 . It may include a region 14 , a third region 15 , and a fourth region 16 and a fifth region 17 that form the fourth protrusion 1230 of the upper terminal 1200_1 .
- the fourth region 16 is positioned at the end of the second region 14
- the fifth region 17 is positioned at the end of the third region 15 .
- FIG. 19 is a perspective view showing the upper terminal 1200_1
- FIG. 20 is a perspective view showing the first terminal 1200A
- FIG. 21 is a perspective view showing the second terminal 1200B
- FIG. 22 is a third terminal (1200C) is a perspective view.
- the first terminal 1200A, the second terminal 1200B, and the third terminal 1200C may include a terminal body 1210 , a third protrusion 1220 , and a fourth protrusion 1230 , respectively.
- the terminal body 1210 of the first terminal 1200A, the terminal body 1210 of the second terminal 1200B, and the terminal body 1210 of the third terminal 1200C are different in the radial direction of the bus bar 60B. can be placed. From the viewpoint of the terminal body 1210 , from the inside to the outside, the first terminal 1200A, the second terminal 1200B, and the third terminal 1200C may be disposed in this order.
- first terminal 1200A, the second terminal 1200B, and the third terminal 1200C may be arranged to include a radially overlapping area.
- the first terminal 1200A, the second terminal 1200B, and the third terminal 1200C may be erected so that the vertical width is larger than the horizontal width corresponding to the thickness of the plate 12 , respectively.
- the third protrusion 1220 extends upward from the end of the terminal body 1210 and is bent outwardly in the radial direction. The end of the third protrusion 1220 is bent in the form of a hook to surround the first end (not shown) of the coil 30B.
- the third protrusion 1220 may include a 3-1 protrusion 1221 and a 3-2 protrusion 1222 .
- the 3-1 protrusion 1221 may be disposed at one end of the terminal body 1210 . have.
- the 3-2 protrusion 1222 may be disposed on the other end of the terminal body 1210 .
- the 3-1 th protrusion 1221 may be connected to the first end of the coil 30B.
- the 3-2 protrusion 1222 may be connected to one end (not shown) of the coil 30B different from the coil 30B connected to the 3-1 protrusion 1221 .
- the second end of each coil 30B may be connected to the neutral terminal 1200_2 .
- the fourth protrusion 1230 is arranged to branch upward from the third protrusion 1220 .
- the fourth protrusion 1230 may be a longitudinal member including a plane.
- the fourth protrusion 1230 may have a longitudinal member in a horizontal cross-section, and a longitudinal direction of the horizontal cross-section may be a circumferential direction of the bus bar 60B.
- the fourth protrusion 1230 may protrude from a connection portion between the third protrusion 1220 and the terminal body 1210 . Accordingly, the fourth protrusion 1230 is disposed on one side of the third protrusion 1220 .
- the fourth protrusion 1230 may include a 3-1 protrusion 1231 and a 3-2 protrusion 1232 .
- the 3-1 th projection 1231 may branch from the 3-1 th projection 1221 .
- the 3-2 protrusion 1232 may branch from the 3-2 protrusion 1222 .
- the first terminal 1200A, the second terminal 1200B, and the third terminal 1200C include the third protrusion 1220 and the fourth protrusion 1230 of the terminal body 1210, but the overall shape is the same, The length of the terminal body 1210 in the circumferential direction or the length of the third protrusion 1220 may be different. However, the size and shape of the fourth protrusion 1230 may be the same in both the first terminal 1200A, the second terminal 1200B, and the third terminal 1200C. This is for common use of the upper terminal 1200_1 in response to the power terminal 1200 at various locations.
- FIG. 23 is a plan view of the upper terminal 1200_1 of the bus bar 60B shown in FIG. 17 .
- the plurality of fourth protrusions 1230 disposed on all upper terminals 1200_1 are disposed at the same position in the vertical direction of the bus bar 60B.
- the plurality of fourth protrusions 1230 may be disposed at equal intervals along the circumferential direction of the bus bar 60B.
- the fourth protrusion 1230 is a longitudinal member having a horizontal cross-section having a length H2 greater than a width W2.
- the long side direction of the horizontal section may be the circumferential direction of the bus bar 60B.
- Some of the plurality of fourth protrusions 1230 may be disposed at positions different from those of the rest in a radial direction of the bus bar 60B.
- the fourth protrusion 1230 may be disposed to overlap the terminal body 1210 with respect to the center C of the bus bar 60B.
- the plurality of fourth protrusions 1230 disposed on the same terminal body 1210 may be disposed on the same circumference with respect to the center of the bus bar 60B.
- the plurality of fourth protrusions 1230 disposed on the first terminal 1200 may be disposed on the first circumference O3 based on the center C of the bus bar 60B.
- the plurality of fourth protrusions 1230 disposed on the second terminal 1200 may be disposed on the second circumference O5 based on the center C of the bus bar 60B.
- the plurality of fourth protrusions 1230 disposed on the third terminal 1200 may be disposed on the third circumference O6 with respect to the center C of the bus bar 60B.
- the first circumference O4 and the second circumference O25 and the third circumference O6 have different radii, respectively.
- the plurality of fourth protrusions 1230 may be disposed at the same intervals based on the circumferential direction of the bus bar 60B.
- the upper terminal 1200_1 is electrically separated from the upper terminal 1200_1 of the first group 1200_1A (hereinafter, referred to as the first group 1200_1A) and the upper terminal of the second group 1200_1B ( 1200_1) (hereinafter referred to as a second group 1200_1B).
- the first group 1200_1A and the second group 1200_1B may be arranged to be separated based on an imaginary straight line passing through the center C of the bus bar 60B.
- first group 1200_1A and the second group 1200_1B may be disposed to be rotationally symmetric with respect to the center C of the bus bar 60B.
- first group 1200_1A and the second group 1200_1B may be symmetrically disposed based on an imaginary straight line passing through the center C of the bus bar 60B.
- the fourth angle R4 of the first group 1200_1A and the fifth angle R5 of the second group 1200_1B may be the same.
- the fourth angle R4 is an angle representing a circumferential distance between the fourth protrusion 1230 from the upper terminal 1200_1 of the first group 1200_1A
- the fifth angle R5 is the second group 1200_1B.
- ) is an angle indicating a circumferential distance between the upper terminal 1200_1 and the fourth protrusion 1230 .
- the reference for the fourth angle R4 and the fifth angle R5 corresponds to the circumferential width center of the horizontal cross-section of the fourth protrusion 1230 , respectively.
- the sixth angle R6 between the first group 1200_1A and the second group 1200_1B may also be the same as the fourth angle R4 or the fifth angle R5 .
- the third angle R3 is an angle representing a circumferential distance between the second protrusions 1230A of the first group 1200_1A and the second protrusions 1230B of the second group 1200_1B adjacent to each other.
- the reference for the sixth angle R6 corresponds to the circumferential width center of the horizontal cross-section of the fourth protrusion 1230 , respectively.
- FIG. 24 is a plan view of the bus bar body 1000 shown in FIG. 17 .
- the plurality of first protrusions 1101 protrude upward from the top surface of the first bus bar body 1100 of the bus bar body 1000 .
- the first protrusion 1101 may be coupled to a body surrounding the power terminal.
- the first protrusion 1101 is for aligning the positions of the power terminal coupled to the bus bar 60B and the fourth protrusion 1230 .
- the first protrusion 1101 may have a cylindrical shape, and an upper end of the first protrusion 1101 may have a conical shape.
- the plurality of first protrusions 1101 may be arranged such that the center thereof is disposed on the same circular orbit O7 with respect to the center C of the bus bar 60B. This is for common use of the second terminal 200_1 in correspondence with the positions of various power terminals.
- the first protrusion 1101 may be disposed inside the fourth protrusion 1230 . In the circumferential direction of the bus bar 60B, the first protrusion 1101 may be disposed between the fourth protrusion 1230 and the adjacent fourth protrusion 1230 .
- FIG. 25 is a view showing a bus bar 60B having a first groove 1102 in place of the first protrusion 1101 on the bus bar body 1100
- FIG. 26 is the bus bar body shown in FIG. (1000) is a plan view.
- the bus bar 60B may include a first groove 1102 in place of the first protrusion 1101 .
- the bus bar body 1100 may include a plurality of first grooves 1102 .
- the plurality of first grooves 1102 may be concavely formed in the upper surface of the bus bar body 100 .
- the first groove 1102 may be engaged with the protruding structure of the body surrounding the power terminal.
- the first groove 1102 is also for aligning the positions of the power terminal coupled to the bus bar 60B and the fourth protrusion 230 .
- the plurality of first grooves 1102 may be arranged so that their centers are disposed on the same track O8 with respect to the center C of the bus bar 60B.
- the first groove 1102 in the circumferential direction of the bus bar 60B may be disposed between the fourth protrusion 1230 and the adjacent fourth protrusion 1230 .
- the first groove 1102 in the radial direction of the bus bar 60B may be disposed so as not to overlap the fourth protrusion 1230 . That is, in the circumferential direction of the bus bar 60B, the first groove 1102 may be disposed between the fourth protrusion 1230 and the adjacent fourth protrusion 1230 . In addition, the second groove 1102 may be disposed to overlap the second bus bar body 1120 in the circumferential direction.
- FIG. 27 is a side cross-sectional view of a motor according to an embodiment of the present invention
- FIG. 28 is an exploded perspective view of the motor according to an embodiment of the present invention.
- the motor may include a shaft 2100 , a rotor 2200 , a stator 2300 , a bus bar 2400 , and a housing 2500 .
- the term “inside” refers to a direction from the housing 2500 toward the shaft 2100, which is the center of the motor, and “outside” refers to a direction opposite to the inside, which is a direction from the shaft 2100 to the housing 2500.
- the circumferential direction or the radial direction is based on the axial center, respectively.
- the shaft 2100 may be coupled to the rotor 2200 .
- the shaft 2100 may be connected to a steering device of a vehicle to transmit power to a steering shaft.
- the rotor 2200 is disposed outside the shaft 2100 .
- the rotor 2200 rotates through electrical interaction with the stator 2300 .
- the rotor 2200 may include a rotor core and a magnet.
- the rotor core may be implemented in a shape in which a plurality of plates in the form of a circular thin steel plate are stacked or in the form of a single cylinder.
- a hole to which the shaft 2100 is coupled may be disposed at the center of the rotor core.
- the magnet may be disposed on the outer circumferential surface or the inside of the rotor core.
- the stator 2300 is disposed outside the rotor 2200 .
- the stator 2300 may include a stator core 2310 , an insulator 2320 , and a coil 2330 .
- the insulator 2320 is mounted on the stator core 2310 .
- the coil 2330 is wound around the insulator 2320 .
- Coil 2330 causes electrical interaction with rotor 2200 .
- the bus bar 2400 is disposed above the stator 2300 .
- the bus bar 2400 includes a body made of an insulating material and a plurality of terminals coupled to the body. At this time, the body is formed of an insulating material to prevent the plurality of terminals from being connected to each other.
- the plurality of terminals connect the coils 2330 wound around the stator core 2310 to each other to apply a current to each coil.
- the housing 2500 may accommodate the rotor 2200 , the stator 2300 , and the bus bar 2400 therein.
- the housing 2500 may include a first part 2510 , a second part 2520 , and a third part 2530 .
- the first part 2510 may be disposed above the bus bar 2400 .
- the second part 2520 may be disposed outside the bus bar 2400 and the stator 2300 .
- the third part 2530 may be disposed below the stator 2300 .
- the first part 2510 and the second part 2520 may be integrally formed.
- the third part 2530 may be coupled to the lower end of the second part 2520 .
- the second part and the third part are integrally formed, and the first part is coupled to the upper end of the second part.
- FIG. 29 is a perspective view illustrating a bus bar
- FIG. 30 is a plan view of the bus bar
- FIG. 31 is a cross-sectional view taken along line AA′ of FIG. 30 .
- the bus bar 2400 may include a body 2410 , a terminal 2420 , and a protrusion 2430 .
- the body 2410 forms the outer shape of the bus bar 2400 .
- the body 2410 may be an annular mold member.
- the body 2410 may be made of an insulating material.
- the body 2410 insulates the plurality of terminals 2420 .
- Terminal 2420 is coupled to body 2410 .
- the terminal 2420 may include a first terminal 2421 and a second terminal 2422 .
- the body 2410 may have a hole formed therein.
- the body 2410 may include a first side surface B1 and a second side surface B2 .
- the first side surface B1 and the second side surface B2 are radially spaced apart from each other.
- the first side (B1) is facing outward, the second side (B2) is facing inward.
- a third side surface (B3) is disposed between the second side surface (B2) and the upper surface of the body (2410).
- the third side surface B3 may be inclined.
- a guide member 2411 may be disposed on the upper surface of the body 2410 .
- the guide member 2411 may extend in the axial direction from the upper surface of the body 2410 .
- a plurality of second terminals 2422 may be disposed inside the guide member 2411 .
- the plurality of second terminals 2422 may be spaced apart from each other. In this case, the second terminal 2422 may be formed longer in the axial direction than the guide member 2411 .
- the upper end of the second terminal 2422 may be disposed higher than the upper end of the guide member 2411 .
- the plurality of second terminals 2422 and the guide member 2411 may be exposed to the upper side of the housing 2500 .
- the first terminal 2421 and the second terminal 2422 may be integrally formed.
- the second terminal 2422 may be vertically bent at the first terminal 2421 .
- a first support surface 2412 may be disposed on the upper surface of the body 2410 .
- the first support surface 2412 may be plural.
- the plurality of first support surfaces 2412 may be spaced apart from each other.
- the plurality of first support surfaces 2412 may be spaced apart from the center of the axis. In this case, the plurality of first support surfaces 2412 may have the same separation distance from the center of the axis.
- the plurality of first support surfaces 2412 may overlap each other in the circumferential direction.
- the first support surface 2412 may be in contact with the housing 2500 .
- the first support surface 2412 may be in contact with the first part 2510 .
- the second support surface 2513 corresponding to the position of the first support surface 2412 may be formed on the first part 2510 .
- the terminal 2420 may include a first terminal 2421 and a second terminal 2422 .
- the first terminal 2421 and the second terminal 2422 may be described separately according to their shape and functional characteristics, and may be a single member connected vertically to each other. Meanwhile, the first terminal 2421 and the second terminal 2422 may be separate entities. In this case, the first terminal 2421 and the second terminal 2422 may be combined by fusing if they are separate products.
- the first terminal 2421 may be electrically connected to the coil 2330 .
- the plurality of first terminals 2421 may be three.
- the plurality of first terminals 2421 may be coupled to the body 2410 .
- the plurality of first terminals 2421 may include a body and a protrusion. It may be arranged in an annular shape with respect to the center of the axis of the body.
- the protrusion may be connected to the outside of the body.
- a plurality of protrusions may be connected to one body. In this case, the body and the protrusion may be a single member.
- the protrusion may be exposed from the side surface of the body 2410 . In this case, the connection end of the first terminal 2421 and the coil 2330 may be fused and electrically connected.
- the second terminal 2422 is connected to a power source. In addition, the second terminal 2422 is connected to the first terminal 2421 to apply power to the first terminal 2421 .
- the plurality of second terminals 2422 may be three.
- the three second terminals 2422 may be connected to power on U, V, and W, respectively.
- the plurality of second terminals 2422 may extend in an axial direction.
- the plurality of second terminals 2422 may protrude from the upper surface of the body 2410 .
- the protrusion 2430 may be disposed on the upper surface of the body 2410 .
- the protrusion 2430 may be coupled to the body 2410 by injection.
- the protrusion 2430 may be disposed between the first side surface B1 and the second side surface B2 in the radial direction.
- the protrusion 2430 may be disposed outside the third side (B3).
- the protrusion 2430 may be disposed at a radial distance from the first side surface B1.
- the protrusion 2430 may be disposed at a radial distance from the second side surface B2 as well. In this case, the protrusion 2430 may be disposed closer to the first side surface B1 than the second side surface B2 .
- a first support surface 2412 may be disposed on an end surface of the protrusion 2430 .
- the first support surface 2412 is in contact with the first part 2510 .
- the body 2410 and the first part 2510 may maintain a separation distance by the axial length of the protrusion 2430 .
- the protrusion 2430 may be plural.
- the height of the end surfaces of the plurality of protrusions 2430 may be the same. That is, the plurality of first support surfaces 2412 may have the same axial height. In this case, the first support surface 2412 is disposed lower than the upper end of the second terminal 2422 .
- the plurality of protrusions 2430 may be spaced apart from each other in the circumferential direction.
- the plurality of protrusions 2430 may be arranged at equal intervals.
- the plurality of protrusions 2430 may be spaced apart from the center of the axis. In this case, the plurality of protrusions 2430 may have the same distance from the center of the axis.
- the plurality of protrusions 2430 may overlap each other in the circumferential direction.
- the plurality of protrusions 2430 may be three.
- the three protrusions 2430 may be spaced apart at intervals of 120 degrees with respect to the center of the axis.
- the second terminal 2422 may be disposed between any one of the three protrusions 2430 (2430a) and the other one (2430b) in the circumferential direction.
- Figure 31 is a cross-sectional view taken along the AA' of Figure 30;
- the protrusion 2430 may include a first member 2431 and a second member 2432 .
- the first member 2431 may extend from the upper surface of the body 2410 .
- the first member 2431 may be made of the same material as the body 2410 .
- the first member 2431 and the body 2410 may be an integral molding member.
- the first member 2431 may have a groove formed therein.
- the second member 2432 may be disposed in the groove of the first member 2431 .
- the second member 2432 may be made of a material different from that of the first member 2431 or the body 2410 .
- the end surface of the second member 2432 may be disposed higher than the end surface of the first member 2431 .
- an end surface of the second member 2432 may contact the first part 2510 .
- the body 2410 may have a separation distance from the first part 2510 .
- FIG. 32 is a view showing a first part and a second part
- FIG. 33 is a bottom view of FIG. 32 .
- the first part 2510 and the second part 2520 may be integrally formed.
- the first part 2510 may have a disk shape.
- the second part 2520 may have a cylindrical shape.
- the first part 2510 may be disposed inside the second part 2520 .
- a fastening part 2521 may be formed at a lower end of the second part 2520 .
- the third part 2530 may be fastened to the fastening part 2521 .
- the first part 2510 may include a first surface A1 and a second surface A2 .
- the first surface A1 and the second surface A2 are disposed vertically. At this time, the first surface A1 faces the bus bar 2400 .
- the second surface (A2) faces the opposite side of the first surface (A1).
- the first surface A1 faces downward, and the second surface A2 faces upward.
- a bearing pocket part 2511 , a plurality of ribs 2512 , a second support surface 2513 , and a hole 2514 may be formed in the first part 2510 .
- the bearing pocket part 2511 may be disposed in the center of the first part 2510 .
- a shaft hole may be formed in the inner center of the bearing pocket portion 2511 .
- the bearing pocket 2511 may have an upper bearing disposed therein. The upper bearing rotatably supports the upper end of the shaft 2100 .
- a plurality of ribs 2512 are disposed radially between the bearing pocket portion 2511 and the second part 2520 .
- the plurality of ribs 2512 may be radially disposed with respect to the axial center. Intervals between the plurality of ribs 2512 may be different from each other.
- a hole 2514 may be disposed between any one of the plurality of ribs 2512 and the other one. The hole 2514 may allow the guide member 2411 and the second terminal 2422 to pass therethrough.
- the second support surface 2513 may be formed on the first surface A1 .
- the second support surface 2513 may be disposed above the body 2410 .
- the second support surface 2513 may overlap the body 2410 in the axial direction.
- the second support surface 2513 may be plural.
- the plurality of second support surfaces 2513 may be spaced apart from each other.
- the separation distance between the plurality of second support surfaces 2513 may be smaller than the separation distance between the plurality of ribs 2512 .
- the plurality of second support surfaces 2513 have the same axial height.
- the second support surface 2513 may be a flat surface.
- the second support surface 2513 may be formed to overlap the rib 2512 .
- the second support surface 2513 may protrude lower than the rib 2512 . Meanwhile, although not shown in the drawings, the second support surface 2513 may be concave upward compared to the rib 2512 or the first surface A1 .
- the plurality of second support surfaces 2513 may be three.
- the three second support surfaces 2513 may be spaced apart from each other at intervals of 120 degrees with respect to the center of the axis.
- the three second support surfaces 2513 are respectively formed to correspond to the positions of the three first support surfaces 2412 .
- a hole 2514 may be disposed between one 2513a and the other 22513b of the second support surface 2513 in the circumferential direction.
- the hole 2514 may be formed to correspond to the position of the guide member 2411 .
- the second support surface 2513 may be formed wider than the first support surface 2412 .
- the second support surface 2513 may be circular.
- the first support surface 2412 may be an end surface of the protrusion 2430 .
- a diameter of the second support surface 2513 may be greater than a diameter of an end surface of the protrusion 2430 .
- the shape of the second support surface 2513 can be designed and modified in various shapes other than the circular shape.
- the center of the second support surface 2513 may be disposed on the same axis as the center of the first support surface 2412 .
- the center of the second support surface 2513 may be displaced from the center of the first support surface 2412 in the axial direction.
- the second support surface 2513 and the first support surface 2412 may be in contact with the end face.
- 34 is an exploded perspective view illustrating a state in which a bus bar is coupled to the first part and the second part;
- the first part 2510 and the second part 2520 form a cylindrical inner space.
- the upper side of the inner space may be closed by the first part 2510 .
- the lower side of the inner space may be opened.
- the bus bar 2400 is inserted into the inner space.
- the bus bar 2400 may be disposed above the inner space.
- the protrusion 2430 and the second support surface 2513 are in contact.
- the body 2410 and the first part 2510 are spaced apart.
- the second terminal 2422 is exposed from the housing 2500 through the hole 2514.
- FIG. 35 is a side cross-sectional view illustrating a state in which the bus bar and the first part and the second part are coupled
- FIG. 36 is an enlarged view of area A of FIG. 35 .
- an end surface of the protrusion 2430 is in contact with the second support surface 2513 .
- the second support surface 2513 is spaced apart from the first surface A1 of the upper surface of the body 2410 in the axial direction.
- the second terminal 2422 is disposed on the upper side of the first part (2510).
- the second terminal 2422 is disposed at a predetermined height H from the first part 2510 . In this case, the height H of the upper end of the second terminal 2422 may be determined according to the axial length H2 of the protrusion 2430 .
- the height H of the second terminal 2422 exposed from the housing 2500 is the axial length H2 of the protrusion 2430 in the axial length H1 of the second terminal 2422 and the first equal to the thickness T1 of the part 2510 minus the thickness T1.
- the height of the second terminal 2422 may be adjusted by changing the axial length H2 of the protrusion 2430 .
- the second terminal 2420 may be connected to an external power source.
- the motor according to this embodiment of the present invention guides the power connection part of the terminal to the correct position, thereby preventing a change in the position of the terminal power connection part due to the accumulated tolerance.
- a plurality of protrusions may be formed in the first part 2510 .
- the axial length of the protrusion may be the same as the axial distance between the first part 2510 and the upper surface of the body 2410 .
- it may be disposed on the second support surface on the upper surface of the protrusion.
- a plurality of first support surfaces in contact with the second support surface may be disposed on the upper surface of the body 2410 .
- the axial height of the upper surface of the body 2410 and the first supporting surface may be the same.
- At least one first protrusion may be formed on the bus bar 2400 .
- at least one second protrusion corresponding to the position of the first protrusion may be formed in the first part 2510 .
- a first support surface may be disposed on the end surface of the first protrusion.
- a second support surface may be disposed on the end surface of the second protrusion.
- the sum of the axial lengths of the first protrusion and the second protrusion may be the same as the axial distance between the first part 2510 and the upper surface of the body 2410 .
- the motor according to the embodiment may place the bus bar in the correct position while the bus bar is in contact with the inner surface of the housing while the bus bar is inserted into the housing. And, by guiding the power connection part of the terminal to the correct position, it is possible to prevent a change in the position of the terminal power connection part due to the accumulated tolerance. Accordingly, it is possible to reduce the failure of the motor due to the power terminal connection failure.
- the inner rotor type motor has been described as an example, but the present invention is not limited thereto.
- the present invention is also applicable to an outer rotor type motor.
- it can be used for various devices such as vehicles or home appliances.
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- Engineering & Computer Science (AREA)
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- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
Claims (10)
- 샤프트;상기 샤프트에 결합되는 로터;상기 로터의 외측에 배치되는 스테이터;상기 스테이터의 상측에 배치되는 버스바;및상기 코일과 연결되는 상기 버스바와 결합하는 전원터미널부를 포함하고,상기 전원터미널부는 제1 홈을 포함하고,상기 버스바는 버스바 바디와, 상기 버스바 바디에 배치되는 복수의 터미널을 포함하고,상기 버스바 바디는 상기 버스바 바디에서 상면에서 상측으로 돌출되어 상기 제1 홈에 배치되는 복수 개의 제1 돌기를 포함하고,복수 개의 상기 제1 돌기는 상기 버스바의 중심을 기준으로 동일한 원형 궤도 상에 배치되는 모터.
- 제1 항에 있어서,상기 버스바 바디는 상하방향으로 다단구조로 배치되는 제1 버스바 바디와 제2 버스바 바디를 포함하고,상기 제1 돌기는 상기 제1 버스바 바디 및 상기 제2 버스바 바디 중 어느 하나에 배치되는 모터.
- 제2 항에 있어서,상기 제1 돌기는 상기 제1 버스바 바디에 배치되고, 상기 제1 돌기는 원주방향으로 상기 제2 버스바 바디와 오버랩되게 배치되는 모터.
- 샤프트;상기 샤프트와 결합된 로터;상기 로터와 대응되게 배치되며, 스테이터 코어와, 코일을 포함하는 스테이터;상기 스테이터의 상측에 배치되는 버스바;상기 코일과 연결되며, 상기 버스바와 결합하는 전원터미널부를 포함하고,상기 전원터미널부는 제2 돌기를 포함하고,상기 버스바는 버스바 바디와, 상기 버스바 바디에 배치되는 복수의 터미널을 포함하고,상기 버스바 바디는 상기 버스바 바디에서 상면에 배치되어 상기 제2 돌기가 배치되는 복수 개의 제2 홈을 포함하고,상기 복수 개의 제2 홈은 상기 버스바의 중심을 기준으로 동일한 원형 궤도 상에 배치되는 모터.
- 샤프트;상기 샤프트와 결합된 로터;상기 로터와 대응되게 배치되는 스테이터;버스바 바디와 상기 버스바 바디에 배치되는 복수의 터미널을 포함하는 버스바; 및전원터미널부 바디와 상기 전원터미널부 바디에 배치되는 복수의 전원터미널을 포함하는 전원터미널부를 포함하고,상기 버스바는 제1 터미널이 배치되는 제1 버스바 바디와 상기 제1 버스바 바디 상측에 배치되며 제2 터미널이 배치되는 제2 버스바 바디를 포함하고,상기 제1 버스바 바디의 상면에 복수의 제1 결합부를 포함하고,상기 전원터미널부 바디의 하면에 상기 제1 결합부와 결합하는 복수의 제2 결합부를 포함하고,상기 제2 터미널과 상기 복수의 전원터미널이 연결되는 모터.
- 샤프트;상기 샤프트에 결합되는 로터;상기 로터의 외측에 배치되는 스테이터;상기 스테이터의 상측에 배치되는 버스바;상기 스테이터 및 상기 버스바를 수용하는 하우징을 포함하고,상기 하우징은 상기 버스바의 상측에 배치되는 제1 파트를 포함하고,상기 버스바는 상기 제1 파트와 접촉되는 적어도 하나의 제1 지지면을 포함하고,상기 제1 파트는 상기 제1 지지면과 각각 접촉되는 적어도 하나의 제2 지지면을 포함하는 모터.
- 제6항에 있어서,상기 제2 지지면은 상기 몸체의 상면 보다 높고, 상기 제2 터미널의 상단 보다 낮게 배치되는 모터.
- 제6항에 있어서상기 돌부는상기 몸체에서 연장되는 제1 부재와,상기 제1 부재의 내측에 배치되는 제2 부재를 포함하는 모터.
- 제8항에 있어서,상기 제2 부재의 단부면은 상기 제1 부재의 단부면 보다 높게 배치되고,상기 제2 부재의 단부면에 상기 제2 지지면에 배치되는 모터.
- 제8항에 있어서,상기 제1 부재는 상기 몸체와 동일 소재이고,상기 제2 부재는 상기 제1 부재와 다른 소재인 모터.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2022549942A JP7655929B2 (ja) | 2020-02-24 | 2021-01-26 | モータ |
| US17/904,885 US12506379B2 (en) | 2020-02-24 | 2021-01-26 | Motor and stator busbar |
| EP21760383.6A EP4113804A4 (en) | 2020-02-24 | 2021-01-26 | Motor |
| CN202180016381.0A CN115152132B (zh) | 2020-02-24 | 2021-01-26 | 马达 |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020200022316A KR102796036B1 (ko) | 2020-02-24 | 2020-02-24 | 모터 |
| KR10-2020-0022316 | 2020-02-24 | ||
| KR10-2020-0033328 | 2020-03-18 | ||
| KR1020200033328A KR102896997B1 (ko) | 2020-03-18 | 2020-03-18 | 모터 |
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| WO2021172770A1 true WO2021172770A1 (ko) | 2021-09-02 |
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| PCT/KR2021/001016 Ceased WO2021172770A1 (ko) | 2020-02-24 | 2021-01-26 | 모터 |
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| US (1) | US12506379B2 (ko) |
| EP (1) | EP4113804A4 (ko) |
| JP (1) | JP7655929B2 (ko) |
| CN (1) | CN115152132B (ko) |
| WO (1) | WO2021172770A1 (ko) |
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| US20120112582A1 (en) * | 2010-11-05 | 2012-05-10 | Lg Innotek Co., Ltd. | Bus bar of eps motor |
| US20120319512A1 (en) * | 2010-03-03 | 2012-12-20 | Nidec Corporation | Busbar unit and motor |
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| KR20190048470A (ko) * | 2017-10-31 | 2019-05-09 | 엘지이노텍 주식회사 | 버스바 및 이를 포함하는 모터 |
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| JP6098920B2 (ja) * | 2012-10-19 | 2017-03-22 | 日本電産株式会社 | ステータユニットおよびモータ |
| JP6248251B2 (ja) * | 2013-11-29 | 2017-12-20 | 多摩川精機株式会社 | アウタロータ型回転センサの信号線引出し構造 |
| US9755376B2 (en) * | 2013-12-11 | 2017-09-05 | Lg Innotek Co., Ltd. | Motor terminal, motor terminal assembly having the same, and method of assembling motor using the same |
| JP6596884B2 (ja) * | 2015-03-31 | 2019-10-30 | 日本電産株式会社 | モータ |
| KR102353916B1 (ko) * | 2015-04-15 | 2022-01-21 | 엘지이노텍 주식회사 | 터미널 어셈블리 및 이를 포함하는 모터 |
| JP6652811B2 (ja) | 2015-10-27 | 2020-02-26 | 株式会社ミツバ | モータ |
| KR102529820B1 (ko) | 2015-11-03 | 2023-05-08 | 엘지이노텍 주식회사 | 모터 |
| US10910924B2 (en) * | 2016-08-12 | 2021-02-02 | Nidec Corporation | Motor |
| JP2018125951A (ja) * | 2017-01-31 | 2018-08-09 | 日本電産株式会社 | モータ及びそれを備えた送風装置 |
| DE112018001656T5 (de) | 2017-03-31 | 2020-01-02 | Nidec Corporation | Sammelschieneneinheit und Motor, der diese aufweist |
| KR102343086B1 (ko) * | 2017-04-26 | 2021-12-24 | 엘지이노텍 주식회사 | 모터 |
| JP7000778B2 (ja) | 2017-09-28 | 2022-01-19 | 日本電産株式会社 | バスバーユニットおよびモータ |
| US11355989B2 (en) * | 2017-10-31 | 2022-06-07 | Lg Innotek Co., Ltd. | Bus bar and motor comprising same |
| JP7155518B2 (ja) * | 2017-12-21 | 2022-10-19 | 日本電産トーソク株式会社 | 電動オイルポンプ |
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- 2021-01-26 WO PCT/KR2021/001016 patent/WO2021172770A1/ko not_active Ceased
- 2021-01-26 JP JP2022549942A patent/JP7655929B2/ja active Active
- 2021-01-26 EP EP21760383.6A patent/EP4113804A4/en active Pending
- 2021-01-26 CN CN202180016381.0A patent/CN115152132B/zh active Active
- 2021-01-26 US US17/904,885 patent/US12506379B2/en active Active
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| US20120319512A1 (en) * | 2010-03-03 | 2012-12-20 | Nidec Corporation | Busbar unit and motor |
| US20120112582A1 (en) * | 2010-11-05 | 2012-05-10 | Lg Innotek Co., Ltd. | Bus bar of eps motor |
| US20150357888A1 (en) * | 2013-03-08 | 2015-12-10 | Kayaba Industry Co., Ltd. | Bus bar unit manufacturing method and bus bar unit |
| KR20170045261A (ko) * | 2014-09-30 | 2017-04-26 | 니혼 덴산 가부시키가이샤 | 모터 |
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Also Published As
| Publication number | Publication date |
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| JP7655929B2 (ja) | 2025-04-02 |
| JP2023516570A (ja) | 2023-04-20 |
| EP4113804A4 (en) | 2024-03-27 |
| US12506379B2 (en) | 2025-12-23 |
| EP4113804A1 (en) | 2023-01-04 |
| CN115152132A (zh) | 2022-10-04 |
| CN115152132B (zh) | 2025-08-26 |
| US20230024882A1 (en) | 2023-01-26 |
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